5 Questions
What is the purpose of armature voltage control during the starting of a DC motor?
To limit the motor current to a safe value
How does adding a variable resistance in series with the armature circuit affect the motor's operation?
It increases the speed drop during loading
What happens if a DC motor is started with full supply voltage across its terminals without any current limiting method?
A very high current will flow, potentially damaging the motor
What is the effect of decreasing the variable resistance in series with the armature circuit as the motor accelerates?
It decreases the armature current
Which method is normally used to control the speed of a DC motor during operation?
$V = I_a(R_a + R_s) + K_eΦω_m$
Test your knowledge of the starting process of DC motors, including the impact of full supply voltage on the motor, current flow, and potential damage.
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